html { -webkit-font-smoothing: antialiased; -webkit-text-size-adjust: 100%; font-size: 40px; background: #fff; }
body { min-width: 320px; max-width: 640px; margin: 0 auto; font-family: arial, Microsoft Yahei; color: #333; background: #fff; }
a, abbr, acronym, address, applet, article, aside, audio, b, big, blockquote, canvas, caption, center, cite, code, dd, del, details, dfn, div, dl, dt, em, embed, fieldset, figcaption, figure, footer, form, h1, h2, h3, h4, h5, h6, header, hgroup, html, i, iframe, img, ins, kbd, label, legend, li, mark, menu, nav, object, ol, output, p, pre, q, ruby, s, samp, section, small, span, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, time, tr, tt, u, ul, var, video { margin: 0px;padding: 0px ; }
ul, li { list-style: none ; }
a:active, a:hover { outline: none; }
img { width: 100%; vertical-align: top; }
a { outline: none; text-decoration: none; cursor: pointer; color: #333; }
a:hover { text-decoration: none; outline: none; }
button, html input[type="button"], input[type="reset"], input[type="submit"] { -webkit-appearance: button; cursor: pointer; }
input[type="search"] { -webkit-appearance: text field; box-sizing: content-box; }
input[type="search"]:-webkit-search-cancel-button, input[type="search"]:-webkit-search-decoration { -webkit-appearance: none; }
button { overflow: visible; }
button, select { text-transform: none; }
.flex { display: flex; flex-direction: row; flex-wrap: wrap; justify-content: space-between; }
.left { float: left; }
.right { float: right; }